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operand
operant
operant conditioning
operate
operatic
operatics
operating cash flow
operating costs
operating cycle
operating exposure
operating income
operating lease
operating leverage
operating microscope
operating risk
operating room
operating system
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operational research
op·er·a·tion·al re·search


noun 
Definition:
 
management 
Same as  operations research
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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